/*
 *  Copyright 2008-2010 NVIDIA Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

#pragma once

#include <thrust/iterator/iterator_traits.h>

#include <thrust/detail/device_ptr_category.h>

#include <thrust/detail/device/cuda/sort.h>
#include <thrust/detail/device/omp/sort.h>

namespace thrust {
namespace detail {
namespace device {
namespace dispatch {

template < typename RandomAccessIterator,
         typename StrictWeakOrdering >
void stable_sort(RandomAccessIterator first,
                 RandomAccessIterator last,
                 StrictWeakOrdering comp,
                 thrust::detail::omp_device_space_tag) {
    // OpenMP implementation
    thrust::detail::device::omp::stable_sort(first, last, comp);
}

template < typename RandomAccessIterator,
         typename StrictWeakOrdering >
void stable_sort(RandomAccessIterator first,
                 RandomAccessIterator last,
                 StrictWeakOrdering comp,
                 thrust::detail::cuda_device_space_tag) {
    // CUDA implementation
    thrust::detail::device::cuda::stable_sort(first, last, comp);
}

template < typename RandomAccessKeyIterator,
         typename RandomAccessValueIterator,
         typename StrictWeakOrdering >
void stable_sort_by_key(RandomAccessKeyIterator keys_first,
                        RandomAccessKeyIterator keys_last,
                        RandomAccessValueIterator values_first,
                        StrictWeakOrdering comp,
                        thrust::detail::omp_device_space_tag,
                        thrust::detail::omp_device_space_tag) {
    // OpenMP implementation
    thrust::detail::device::omp::stable_sort_by_key(keys_first, keys_last, values_first, comp);
}

template < typename RandomAccessKeyIterator,
         typename RandomAccessValueIterator,
         typename StrictWeakOrdering >
void stable_sort_by_key(RandomAccessKeyIterator keys_first,
                        RandomAccessKeyIterator keys_last,
                        RandomAccessValueIterator values_first,
                        StrictWeakOrdering comp,
                        thrust::detail::cuda_device_space_tag,
                        thrust::detail::cuda_device_space_tag) {
    // CUDA implementation
    thrust::detail::device::cuda::stable_sort_by_key(keys_first, keys_last, values_first, comp);
}

} // end namespace dispatch
} // end namespace device
} // end namespace detail
} // end namespace thrust

